Just look at the immense community disruption that systemd has caused.
I don't like systemd (like some of the ideas but not how they are implemented), but outside of the Debian vote, I don't think there's been any community distruption other than some heated comments on message boards, and even that has died down due to people being dead tired of the same arguments put against eachother over and over again. All major distros are going with systemd, I believe eventually (perhaps soon if the developers keep screwing up) something better will replace it, meanwhile it is the de facto standard on Linux distros, where is this 'immense disruption' exactly ? When the vast majority choose one direction it's hardly a disruption.
It's pretty widely disliked
Anything with which to substantiate this ? As far as DE's go, Gnome seems to be the most widely liked, default in most distros, most themes.
yet is forced on users as the default desktop environment by a number of the major Linux distros.
Ah, this again. If your distro supply a DE right-out-of-the-box, then someting has to be the default, when it's not YOUR personal choice, it's suddenly 'forced on you'. Come on, either use a distro which doesn't ship with a default DE, or better yet, one which ships with your particular favorite, vote with your feet.
Logic is the chastity belt of the mind!